Data points: 76
Model compare
The readout for Gemini 3.5 Flash and GPT-4, before the detailed comparison sheet.
Weighted outcome: Gemini 3.5 Flash. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Gemini 3.5 Flash
Gemini 3.5 Flash has the higher weighted result; Model A / B score 93.3 to 6.7.
Evidence depth
76 data points
Includes 6 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Gemini 3.5 Flash
The charts below split 14 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for Gemini 3.5 Flash and GPT-4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Gemini 3.5 Flash | GPT-4 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 93.3 pts | 6.7 pts |
| Benchmark category leads | 1 categories | 0 categories |
| Operational advantages | Cheapest input price, Provider coverage | Free providers |
| Context window | 1.0M tokens | 8.2K tokens |
| Max output | 65.5K tokens | 4.1K tokens |
| Modalities | Input TextImagevideoFileAudio Output |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Gemini 3.5 Flash | GPT-4 |
|---|---|---|
| Developer | OpenAI | |
| Released | May 2026 | May 2023 |
| Parameters | No data | No data |
| Tokenizer | Gemini | GPT |
| Knowledge cutoff | 2025-01-01 | 2021-09-30 |
| OpenRouter ID | google/gemini-3.5-flash | openai/gpt-4 |
| References | No data | No data |
This report only uses LMSpeed data for Gemini 3.5 Flash and GPT-4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Gemini 3.5 Flash
Gemini 3.5 Flash is stronger in benchmark categories (Coding) and operational dimensions (Cheapest input price, Provider coverage).
GPT-4
GPT-4 has these operational advantages: Free providers.
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Gemini 3.5 Flash
56.3
Avg. score
GPT-4
49.5
Gemini 3.5 Flash
Gemini 3.5 Flash leads by 5.2
Gemini 3.5 Flash
Gemini 3.5 Flash
Gemini 3.5 Flash
No data
Gemini 3.5 Flash
Gemini 3.5 Flash
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Gemini 3.5 Flash
winner240.1 tok/s
Rank #9/139 · confidence 4
GPT-4
33.9 tok/s
Rank #134/139 · confidence 4
Gemini 3.5 Flash
10.48 s
Rank #75/139 · confidence 4
GPT-4
winner0.97 s
Rank #33/139 · confidence 4
Gemini 3.5 Flash
10.48 s
Rank #117/139 · confidence 4
GPT-4
winner0.97 s
Rank #53/139 · confidence 4
Gemini 3.5 Flash
winner$3.38/M
Rank #118/163 · confidence 4
GPT-4
$37.50/M
Rank #161/163 · confidence 4
Gemini 3.5 Flash
winner$1.50/M
Rank #120/163 · confidence 4
GPT-4
$30.00/M
Rank #161/163 · confidence 4
Gemini 3.5 Flash
winner$9.00/M
Rank #121/163 · confidence 4
GPT-4
$60.00/M
Rank #156/163 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Gemini 3.5 Flash | GPT-4 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Gemini 3.5 Flash | GPT-4 |
|---|---|---|
0 tests | Gemini 3.5 Flash speed / latency N/A / N/A input / output No data | GPT-4 speed / latency N/A / N/A input / output No data |
0 tests | Gemini 3.5 Flash speed / latency N/A / N/A input / output No data | GPT-4 speed / latency N/A / N/A input / output No data |
0 tests | Gemini 3.5 Flash speed / latency N/A / N/A input / output No data | GPT-4 speed / latency N/A / N/A input / output No data |
0 tests | Gemini 3.5 Flash speed / latency N/A / N/A input / output No data | GPT-4 speed / latency N/A / N/A input / output No data |
0 tests | Gemini 3.5 Flash speed / latency N/A / N/A input / output No data | GPT-4 speed / latency N/A / N/A input / output No data |
Gemini 3.5 Flash gemini-3.5-flash speed / latency No data input / output $0/request | GPT-4 gpt-4-32k speed / latency No data input / output $0/request | |
Gemini 3.5 Flash gemini-3.5-flash-c speed / latency No data input / output $0.0027/request | GPT-4 gpt-4-32k speed / latency No data input / output $55.89/M | |
Gemini 3.5 Flash gemini-3.5-flash speed / latency No data input / output $0.103/M/$0.616/M | GPT-4 gpt-4-32k speed / latency No data input / output $39.45/M |
Weighted outcome: Gemini 3.5 Flash. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input Text Output Text |
| Features | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingStructured outputsJSON mode |
|---|
